Speaking of which, there’s the issue of doggy do-do. However positively disposed you are towards our four-legged friends, no-one enjoys stepping in a steaming pile of poop. Yet despite all those green disposal bins supplied with free brown, erm, doggy bags, some owners persistently fail to clear up after their pets. In Prague 7, a witty ad campaign had cardboard cutouts of famous historical figures pointing to the offending excrement and pleading “Neserte na nás” (“Don’t shit on us”). This may have raised the odd chuckle, but it failed to improve cleanliness. Matters have become so serious that Prague 7’s district council is considering DNA testing feces at the scene of the crime in order to track down the responsible pooches. Scooby Doo, eat your heart out.